when a snowbird or yankee visits a restaurant while staying in Florida for the winter they will order a free glass of water to save a littlemoney. once the server brings the glass of water, the snowbird takes the lemon which is included with the glass of water, and squeezes its juice into the water, and then adds a couple packets of sugar or sugar substitute (which are sitting on the table and are also free), then mixes it all together so that they have a free glass of lemonade, or a "snowbird cocktail."

waiter: (sarcastically) those yankees over there are making snowbird cocktails, so I know I'll be getting a HUGE tip today.